1 files changed, 2 insertions, 0 deletions
diff --git a/thread.h b/thread.h
index 14fc1c5ac2..38020715ee 100644
--- a/thread.h
+++ b/thread.h
@@ -472,6 +472,8 @@
 #  define PERL_READ_UNLOCK        NOOP
 #  define PERL_WRITE_LOCK         NOOP
 #  define PERL_WRITE_UNLOCK       NOOP
+#  define PERL_RW_MUTEX_INIT      NOOP
+#  define PERL_RW_MUTEX_DESTROY   NOOP
 #endif
 
 #ifndef LOCK_DOLLARZERO_MUTEX